List of Windows 11 known bugs and launch issues

Windows 11 Install Fewminutes
Windows 11 Install Fewminutes (Image credit: Daniel Rubino / Windows Central)

What you need to know

  • Windows 11 officially launched on October 4, 2021.
  • Microsoft has a doc that lists all of the known issues with the operating system.
  • As Windows 11 only started rolling out recently, more issues could appear.

Windows 11 officially started rolling out this week. Before installing the new operating system, you can check out all of its known issues. A recently updated doc from Microsoft (opens in new tab) lists the known issues with Windows 11. Note that since Windows 11 just launched, more issues could be discovered.

At the moment, the only known issues are related to compatibility. Here are all of the known issues currently listed by Microsoft:

Compatibility issues have been found between Oracle VirtualBox and Windows 11Microsoft and Oracle have found a compatibility issue between VirtualBox and Windows 11, when Hyper-V or Windows Hypervisor is installed. You might be unable to start Virtual machines (VMs) and you might receive an error. To safeguard your upgrade experience, we have applied a compatibility hold on these devices from installing or being offered Windows 11.Compatibility issues with Intel "Killer" networking software and Windows 11Compatibility issues have been found between some Intel "Killer" networking software and Windows 11. Devices with the affected software might drop User Datagram Protocol (UDP) packets under certain conditions. This creates performance and other problems for protocols based on UDP. For example, some websites might load slower than others in affected devices, with videos streaming slower in certain resolutions. VPN solutions based on UDP might also be slower.Compatibility issues have been found between Cốc Cốc browser and Windows 11Compatibility issues have been found between Cốc Cốc browser and Windows 11. Cốc Cốc browser might be unable to open and, on some devices, might cause other issues or errors.  

Microsoft's document includes more details and workarounds for the known issues.

Make sure to check out our piece on everything that's new and changed in Windows 11. You might not see the option to upgrade to Windows 11 right away. We have a guide on which PCs will receive the update immediately and how to upgrade Windows 11 right now.

Sean Endicott
News Writer and apps editor

Sean Endicott brings nearly a decade of experience covering Microsoft and Windows news to Windows Central. He joined our team in 2017 as an app reviewer and now heads up our day-to-day news coverage. If you have a news tip or an app to review, hit him up at (opens in new tab).

  • I wouldn't list the VirtualBox thing as an issue. You can't have two virtualization technologies on the same machine. That's not a known issue it's a technology limitation and has been like that since virtualization has been a thing.
  • Well tell that to my computer cause I can run hyper-vm VMware and virtualbox at the same time with no problems and each one will start up just fine
  • This is because Virtual Box does NOT support TPM pass-thru, and Hyper-V does. Windows 11 is the first step in moving to an Xbox-like implementation of VBS (Virtualization-Based Security) where EVERYTHING is run in separate, virtualized sandboxes for ALL OS services (with heavy encryption of all data flowing between any VBS layers/containers.) If you want to see where W11 is going, look no further than your XBox. Microsoft is using the same VBS technology in XBox (and Azure) to allow WSL (Windows Sub-system for Linux) that they use to achieve the backwards-comparability layers on XBox that allow you to run IBM-Cell-CPU-based XB360 games on a x86-64 AMD APU. They are going to continue to refine and expand this technology into the W11 Consumer space as it's the best (and most flexible) tech they have to decouple the OS from the underlying hardware (something they first did way back with Windows NT's HAL (Hardware Abstraction Layer.))
    The HAL in W11 will slowly be replaced with a VBS layer to completely decouple the OS Services from the hardware restrictions/limitations and thus make the entire OS significantly more secure (and conincidentally make it significantly easier for MS to move it into the Azure Cloud as an OSaaS (OS as a Service.) The Microsoft 365 product offering is a first step in that migration. Thats where this is all going, so buckle up boys. It's going to get very interesting.